html,
body {
	height: 100%;
	margin: 0;
	padding: 0;
}

.box {
	position: absolute;
	left: 0;
	top: 0;
	right: 0;
	bottom: 0;
	background: rgba(0, 0, 0, .5);
	display: none;
}

.main {
	position: absolute;
	left: 0;
	top: 0;
	right: 0;
	bottom: 0;
	width: 400px;
	height: 300px;
	line-height: 50px;
	margin: auto;
	text-align: center;
	background: burlywood;
}

.content {
	width: 650px;
	margin: 0 auto;
}

table {
	width: 100%;
	text-align: center;
	border: 2px solid #000;
	border-collapse: collapse;
	margin: auto;
}

table tr td {
	border: 2px solid #000;
}

table tr th {
	border: 2px solid #000;
}
